smothering vs suffocative

smothering and suffocative both are adjectives.

Word	Noun	Adjective	Verb	Adverb
smothering	No	Yes	No	No
suffocative	No	Yes	No	No

As adjectives, smothering and suffocative are synonyms defined as:

smothering and suffocative: causing difficulty in breathing especially through lack of fresh air and presence of heat

Other synonyms of smothering include choking, suffocating.

smothering (adjective)	suffocative (adjective)
causing difficulty in breathing especially through lack of fresh air and presence of heat	causing difficulty in breathing especially through lack of fresh air and presence of heat